Quote:
Originally Posted by EdFNJ
You probably have an air conditioning RETURN DUCT in your B/R. The return duct is the one without the adjustment lever. I have noticed the door in our M/BR would "suck closed" when we "almost" closed it and sometimes when the A/C kicks on or there is a strong wind outside the door rattles if it is closed. The homes are tightly sealed around here so the return air pressure can close (or rattle) your door. Sometimes the air gets pulled through the house from a small air leak under a door or through the garage just from wind.
You can be pretty sure if it were a tremor it would be reported on the news, even if it was a tiny one. We had a number of very tiny ones in NJ within 3 miles of our home over the years only 1 of which we felt and every one was reported on the news as if it were the east coast version of the San Francisco quake. It also could be poltergeists but I'd bet on air pressure from outside coming in and up through the return duct in the B/R shaking the door.
(My explanation may be scientifically off - but the theory is right - air pressure can cause the rattle) 
edit: we're a little over 2mi S. of LSL in Amelia |
Each bedroom has a return air diffuser or a return air transfer grill to the hallway. Without one of those and with your door shut that room would not get any supply AC unless the window was open